Kubota KM Series Breaker – Overview
Precision, Power, and Performance for Every Application
The Kubota KM Series Hydraulic Breaker is purpose-built to deliver exceptional power, precision, and durability for a wide range of construction, demolition, and groundworks applications. Designed specifically for Kubota excavators, the KM Series integrates seamlessly with your machine to maximise productivity and reliability on-site — whether you’re breaking concrete, asphalt, or rock.
At the core of the KM Series is Kubota’s engineering excellence, delivering superior impact performance with minimal vibration and noise. The hydraulic breaker’s design ensures consistent power output, longer service life, and smoother operation, even under heavy workloads. Each unit is perfectly matched to the flow and pressure characteristics of Kubota excavators, ensuring optimum efficiency and reduced fuel consumption.
Built with a robust monoblock structure, the Kubota KM Series features no through bolts, significantly improving durability and reducing maintenance costs. This solid, integrated design ensures fewer weak points and exceptional reliability, even during continuous operation. The internal nitrogen-gas assist system increases impact energy while maintaining stable performance across different materials and conditions.
The lightweight, compact construction of the KM Series Breaker makes it ideal for use with mini and mid-sized excavators across Kubota’s KX and U series. It offers outstanding control and accuracy, enabling operators to work efficiently in confined or sensitive environments without compromising power. The advanced damping system reduces vibration and recoil, protecting both the operator and the excavator for longer-term durability.
Maintenance is straightforward thanks to the breaker’s simple service layout and easily replaceable wear parts, allowing for fast turnaround times and reduced downtime. Kubota’s commitment to reliability ensures the KM Series performs consistently day after day — making it a must-have attachment for professionals who demand performance and dependability.
Key Features
- Robust monoblock design with no through bolts for maximum durability and minimal maintenance
- Optimised hydraulic performance matched to Kubota excavators for superior efficiency
- High impact energy with nitrogen-gas assist system for consistent power delivery
- Lightweight, compact design for precision in confined spaces
- Low vibration and noise levels for operator comfort and machine protection
- Easy maintenance with accessible wear parts and simple servicing
Specifications
| Model |
KM55 |
KM105 |
KM155 |
KM205 |
KM305 |
KM455 |
| Weight class |
0.7-1.1 |
1.1-3 |
1.9-4.5 |
2.5-6 |
4.5-9 |
6.5-13 |
| Kubota mini-excavator |
K008-5 / U10-5 |
KX015-4 KX016-4 U17-3α KX018-4 KX019-4 |
U20-3a, U27-4, KX027-4, KX030-4 |
KX030-4 KX037-4 U36-4 KX042-4α |
U50-5 U56-5 KX060-5 KX085-5 |
KX085-5 |
| Impact rate (bpm) |
960 – 2160 |
720 – 2280 |
750-1400 |
750 – 1400 |
700 – 1300 |
540 – 1260 |
| Total diameter (mm) |
40 |
45 |
50 |
65 |
80 |
95 |
| Working length of working tool (mm) |
420 |
450 |
510 |
600 |
800 |
840 |
